Oscar with holes in fin??

GTK

AC Members
A couple of weeks ago I noticed a couple of pin-sized holes in my Oscar's fins. Now they're getting bigger. Is this "fin rot"? If so, how do I treat it? (All water parameters are good.) If treatment works, will the holes eventually heal up and disappear? Thanks!!
 
It sounds fungal. My convict got fin rot due to having its fins wrecked by my JD. I moved the convict to a hospital tank and used Melafix which is a anti-bacterial and fungus medication. The fungis went away within a week of treatment.
 
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